Highway Capacity Manual改訂の動向--テイラ-教授の講演より

On the nature of

Mobility as a Service (MaaS) is a recent innovative transport concept, anticipated to induce significant changes in the current transport practices. However, there is ambiguity surrounding the concept; it is uncertain what are the core characteristics of MaaS and in which way they can be addressed. Further, there is a lack of an assessment framework to classify their unique characteristics in a systematic manner, even though several MaaS schemes have been implemented around the world. In this study, we define this set of attributes through a literature review, which is then used to describe selected MaaS schemes and existing applications. We also examine the potential implications of the identified core characteristics of the service on the following three areas of transport practices: travel demand modelling, a supply-side analysis, and designing business model. Finally, we propose the necessary enhancements needed to deliver such an innovative service like MaaS, by establishing the state of art in those fields.

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Mobility as a Service: A Critical Review of Definitions, Assessments of Schemes, and Key Challenges

This paper presents a literature review of studies that investigate infrastructure needs to support the market introduction of plug-in electric vehicles (PEVs). It focuses on literature relating to consumer preferences for charging infrastructure, and how consumers interact with and use this infrastructure. This includes studies that use questionnaire surveys, interviews, modelling, GPS data from vehicles, and data from electric vehicle charging equipment. These studies indicate that the most important location for PEV charging is at home, followed by work, and then public locations. Studies have found that more effort is needed to ensure consumers have easy access to PEV charging and that charging at home, work, or public locations should not be free of cost. Research indicates that PEV charging will not impact electricity grids on the short term, however charging may need to be managed when the vehicles are deployed in greater numbers. In some areas of study the literature is not sufficiently mature to draw any conclusions from. More research is especially needed to determine how much infrastructure is needed to support the roll out of PEVs. This paper ends with policy implications and suggests avenues of future research.

/pdf/a-review-of-consumer-preferences-of-and-interactions-with-4evrb8sg2i.pdf

A review of consumer preferences of and interactions with electric vehicle charging infrastructure

The actions of autonomous vehicle manufacturers and related industrial partners, as well as the interest from policy makers and researchers, point towards the likely initial deployment of autonomous vehicles as shared autonomous mobility services. Numerous studies are lately being published regarding Shared Autonomous Vehicle (SAV) applications and hence, it is imperative to have a comprehensive outlook, consolidating the existing knowledge base. This work comprehensively consolidates studies in the rapidly emerging field of SAV. The primary focus is the comprehensive review of the foreseen impacts, which are categorised into seven groups, namely (i) Traffic & Safety, (ii) Travel behaviour, (iii) Economy, (iv) Transport supply, (v) Land–use, (vi) Environment & (vii) Governance. Pertinently, an SAV typology is presented and the components involved in modelling SAV services are described. Issues relating to the expected demand patterns and a required suitable policy framework are explicitly discussed.

/pdf/shared-autonomous-vehicle-services-a-comprehensive-review-qacqjg2kag.pdf

Shared autonomous vehicle services: A comprehensive review

The number of carsharing cars and users is growing throughout the world. Although there is a comparatively small share in modal split, carsharing is becoming more important as a supplemental transport mode, especially in metropolitan areas. This implies a need to further develop planning tools, so that this “new mode” can be considered in the planning process. This paper illustrates the integration of carsharing in an agent-based travel demand model that simulates the travel behavior of the population in the greater Stuttgart area for one week. Since it is the first time that carsharing usage is simulated for more than one day, this model permits longitudinal analysis of the intensity and variability of carsharing usage.

Implementation of free-floating and station-based carsharing in an agent-based travel demand model

mobiTopp – A Modular Agent-based Travel Demand Modelling Framework

The extensive market introduction of autonomous vehicles will be revolutionary for traditional transportation systems. Especially today's clear boundaries between private and public transportation systems will blur. Due to the possibility of an autonomous relocation of cars, car-sharing will become more relevant and compete the protected taxicab market in Germany. Private car ownership might even become redundant. Having these possible future circumstances in mind, we use a microscopic travel demand model to simulate the mode choice behaviour in a case study for the Stuttgart region: we presume a world without private cars and the presence of a large autonomous mobility on demand (AMOD) service instead. Following, under the assumption that up to four persons share a ride, we calculated the number of cars needed to run the AMOD service smoothly. We show that not all trips, previously made by private car, are substituted by the AMOD service; the modal share of walking, public transportation and bicycling is increasing as well. Due to lower cost of the AMOD service compared with car trips, trip lengths increase as well. The results show that about 45% of all vehicle movements and 20% of all vehicle kilometres could be saved. Furthermore, the results show that about 85% of all vehicles in the Stuttgart region might be dispensable.

https://publikationen.bibliothek.kit.edu/1000073848/15099396

Potentials of Autonomous Vehicles in a Changing Private Transportation System – a Case Study in the Stuttgart Region

https://www.econstor.eu/bitstream/10419/30165/1/619833866.pdf

Nicolai Mallig

Papers

Implementation of free-floating and station-based carsharing in an agent-based travel demand model

mobiTopp – A Modular Agent-based Travel Demand Modelling Framework

Implementation of free-floating and station-based carsharing in an agent-based travel demand model

Potentials of Autonomous Vehicles in a Changing Private Transportation System – a Case Study in the Stuttgart Region

A relational database for bibliometric analysis